RH7 and Oracle 8.1.6 Help Required

I am New to Unix. i had installed Redhat 7.0 in my machine and i tried
installing Oracle 8.1.6 for Linux. i am unable to proceed ( The system hangs ).
I came to know that there is some problem in glibc version , if i am right
RH7.0 comes with glibc 2.2 wheras Oracle expects glibc 2.1.

I searched technet and RH sites and found a workaround of installing glibc 2.1(
But i can't find a step by step document any where) , Since I am new to Unix
can some share some step by step documents or procedures for doing the same.

Thanks for your Time

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